{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4125FNI-S423T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4125FNI-S423T","canonicalUrl":"https://icboms.com/infineon/CY8C4125FNI-S423T","factsUrl":"https://icboms.com/api/mcp/products/CY8C4125FNI-S423T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 4 CY8C4100S series CY8C4125FNI-S423T, ARM® Cortex®-M0+ 32-Bit MCU, 24 MHz, FLASH, 1.71 V supply, 31 I/O, 16x10b Slope + 16x12b SAR ADC, 2xIDAC, -40°C to 85°C, Surface Mount.","salesMarkdown":"## PSoC 4 CY8C4125 — what you get with the Cortex-M0+ at 24 MHz The Infineon CY8C4125FNI-S423T is a PSoC 4 MCU from the CY8C4100S series, built around an ARM Cortex-M0+ core running at 24 MHz. The part integrates a dense analog front end: 16-channel 10-bit slope ADC, 16-channel 12-bit SAR ADC, and two IDACs — enough to handle multi-sensor arrays or CapSense electrode scanning without external muxing. Internal oscillator means no external crystal for the core clock, saving BOM cost and board area. ## 24 MHz core — what it handles and what it doesn't The 24 MHz Cortex-M0+ is a deliberate choice for power-sensitive, deterministic control loops — think capacitive touch scanning, sensor polling, and simple protocol bridging. It is not a DSP workhorse; the CY8C4245LQI-483 runs at 48 MHz with the same Cortex-M0 core if you need double the throughput for FFT or faster serial throughput. The trade-off is current draw: the 24 MHz part sips less in active mode, which matters for battery-powered panels or wireless sensor nodes where every milliamp counts. Infineon lists the CY8C4125FNI-S423T as Active. For a production BOM that already qualifies this MCU, there is no urgency to requalify a replacement — the supply outlook is stable. The 85°C ceiling is the standard industrial limit; if your design needs 105°C or 125°C junction temperature, you would step up to the automotive-grade PSoC 4 variants.","metaTitle":"Infineon CY8C4125FNI-S423T PSoC 4 MCU, ARM Cortex-M0+","metaDescription":"Infineon CY8C4125FNI-S423T PSoC 4 ARM Cortex-M0+ MCU, 24 MHz, 31 I/O, 16x12b SAR ADC, CapSense, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"series":"PSOC® 4 CY8C4100S","has_mpn":"CY8C4125","cpu_core":"ARM® Cortex®-M0+","frame_size":"32-Bit Single-Core","fuse_speed":"24 MHz","connectivity":"I²C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART","package_type":"Tape & Reel (TR)","Number Of I/O":"31","mounting_type":"Surface Mount","product_status":"Active","Data Converters":"A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","peripheral_types":"Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT","supply_voltage_v":"1.71","Program Memory Type":"FLASH","Operating Temperature High":"-40°C to 85°C (TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.60","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1ace7f65017fc7aa7d4f2258d7a89bb2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY8C4125FNI-S423T/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4125FNI-S423T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4125FNI-S423T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}